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Finding the Fourth Proportional to 255,211.55, 382,735.70 and 84,401.54

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Solution

The fourth proportional to 255,211.55, 382,735.70 and 84,401.54 is: 126,575.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,211.55 : 382,735.70 = 84,401.54 : x
  2. Step 2: Convert to fraction form
    255,211.55/382,735.70 = 84,401.54/x
  3. Step 3: Cross multiply
    255,211.55x = 382,735.70 × 84,401.54
  4. Step 4: Simplify right side
    255,211.55x = 32,303,480,157.29
  5. Step 5: Solve for x
    x = 32,303,480,157.29/255,211.55
  6. Step 6: Final answer
    x = 126,575.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.